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@turf/triangle-grid

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    @turf/triangle-grid

turf triangle-grid module


Version published
Weekly downloads
362K
decreased by-4.17%
Maintainers
4
Install size
3.03 MB
Created
Weekly downloads
 

Changelog

Source

5.0.0 🎉

⭐️ Major Updates

  • TurfJS now supports ES Modules (Related PR's)
  • Optional parameters are now defined as an Object.

🚀 New Modules

[@turf/voronoi][voronoi]

Takes a FeatureCollection of points, and a bounding box, and returns a FeatureCollection of Voronoi polygons. (PR https://github.com/Turfjs/turf/pull/1043 - Author @stevage)

[@turf/shortest-path][shortest-path]

Returns the shortest path from start to end without colliding with any feature in obstacles (PR https://github.com/Turfjs/turf/pull/956 - Author @stebogit)

[@turf/boolean-parallel][boolean-parallel]

Boolean-Parallel returns True if each segment of line1 is parallel to the correspondent segment of line2 (PR https://github.com/Turfjs/turf/pull/941 - Author @stebogit)

[@turf/nearest-point-on-line][nearest-point-on-line]

Takes a {@link Point} and a {@link LineString} and calculates the closest Point on the (Multi)LineString. (PR https://github.com/Turfjs/turf/pull/939 - Author @stebogit)

🏅 New Features/Enhancements

  • Updates [@turf/unkink-polygon][unkink-polygon] testing & added flattenEach instead of using flatten. (PR https://github.com/Turfjs/turf/pull/889)

  • Add multi-geomtry support to @turf/line-split (PR https://github.com/Turfjs/turf/pull/1078)

  • Improve @turf/meta lineEach method to provide properties, id and bbox (PR https://github.com/Turfjs/turf/pull/1010)

🐛 Bug Fixes

  • Fixes @turf/helpers earth radius variable (PR https://github.com/Turfjs/turf/pull/1012)

  • Fixes @turf/polygon-tangents bug (PR https://github.com/Turfjs/turf/pull/1058)

  • Fixes @turf/line-chunk bug when the number of segments is integer (PR https://github.com/Turfjs/turf/pull/1046)

  • Fixes segmentEach and segmentReduce methods in @turf/meta to ensure something is returned (PR https://github.com/Turfjs/turf/pull/968)

⚠️ Breaking Change

  • Optional parameters are now defined as an Object:

Before

var from = [-75.343, 39.984];
var to = [-75.534, 39.123];
var units = 'miles';
var distance = turf.distance(from, to, units);

After

var from = [-75.343, 39.984];
var to = [-75.534, 39.123];
var options = {units: 'miles'};
var distance = turf.distance(from, to, options);
  • Reworked @turf/random PR https://github.com/Turfjs/turf/issues/994
  • Deprecate @turf/idw Issue https://github.com/Turfjs/turf/issues/887
  • Reworked Grid modules @turf/point-grid/hex/square/triangle PR https://github.com/Turfjs/turf/pull/1029
  • Renamed Modules/Methods
    • [x] @turf/inside => @turf/boolean-point-in-polygon https://github.com/Turfjs/turf/issues/860#issuecomment-317216235
    • [x] @turf/within => @turf/points-within-polygon https://github.com/Turfjs/turf/issues/860#issuecomment-317216235
    • [x] @turf/bezier => @turf/bezier-spline Issue https://github.com/Turfjs/turf/issues/661
    • [x] @turf/nearest => @turf/nearest-point https://github.com/Turfjs/turf/pull/858#issuecomment-317197295
    • [x] @turf/point-on-line => @turf/nearest-point-on-line https://github.com/Turfjs/turf/pull/858#issuecomment-317197295
    • [x] @turf/lineDistance => @turf/length https://github.com/Turfjs/turf/issues/860#issuecomment-317229869
    • [x] @turf/helpers
      • [x] radians2degrees => radiansToDegrees
      • [x] degrees2radians => degreesToRadians
      • [x] distanceToDegrees => lengthToDegrees
      • [x] distanceToRadians => lengthToRadians
      • [x] radiansToDistance => radiansToLength
      • [x] bearingToAngle => bearingToAzimuth
      • [x] convertDistance => convertLength

Readme

Source

@turf/triangle-grid

triangleGrid

Takes a bounding box and a cell depth and returns a set of triangular polygons in a grid.

Parameters

  • bbox Array<number> extent in [minX, minY, maxX, maxY] order
  • cellSide number dimension of each cell
  • options Object Optional parameters (optional, default {})
    • options.units string used in calculating cellSide, can be degrees, radians, miles, or kilometers (optional, default 'kilometers')
    • options.mask Feature<(Polygon | MultiPolygon)>? if passed a Polygon or MultiPolygon, the grid Points will be created only inside it
    • options.properties Object passed to each point of the grid (optional, default {})

Examples

var bbox = [-95, 30 ,-85, 40];
var cellSide = 50;
var options = {units: 'miles'};

var triangleGrid = turf.triangleGrid(bbox, cellSide, options);

//addToMap
var addToMap = [triangleGrid];

Returns FeatureCollection<Polygon> grid of polygons


This module is part of the Turfjs project, an open source module collection dedicated to geographic algorithms. It is maintained in the Turfjs/turf repository, where you can create PRs and issues.

Installation

Install this module individually:

$ npm install @turf/triangle-grid

Or install the Turf module that includes it as a function:

$ npm install @turf/turf

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Last updated on 01 Nov 2017

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